12cm(Full size)--->Support 1x6cm fan (thickness:2.5cm) or 2x 4cm/5cm fans
8cm(Low size) --->Support 1x 4cm or 5cm fan (thickness:2.0cm)
Occupy 3 slot space.(***please note:check your PC case space,make sure to mount fan bracket.)
The fan can be installed outside the chassis or inside the chassis ----Sending cold air into the chassis OR discharging heat from the chassis to the outside
Solving heat problem, so enhance system stability, extend hardware life.